Sending Email with an SMTP Client Built with Prototype and PHP - Full source code of the SMTP client application
(Page 4 of 4 )
As I promised in the section that you just read, below I listed the full source code corresponding to this Prototype-based SMTP application, so you can copy it and pasted it into your preferred text editor for further modifications and improvements.
Here is the corresponding code listing:
(signature of prototype_mail.htm file)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-
8859-1" />
<title>Prototype-based SMTP Client</title>
<style type="text/css">
body{
padding: 0;
margin: 0;
background: #fff;
}
h1{
font: bold 24px Arial, Helvetica, sans-serif;
color: #000;
text-align: center;
}
p{
font: bold 12px Arial, Helvetica, sans-serif;
color: #000;
padding-right: 100px;
text-align: right;
}
textarea{
width: 400px;
height: 300px;
padding: 2px;
font: normal 12px Arial, Helvetica, sans-serif;
color: #000;
}
#maincontainer{
width: 600px;
height: 550px;
margin-left: auto;
margin-right: auto;
background: #f5ebb1;
border: 1px solid #000;
}
#state{
font: bold 12px Arial, Helvetica, sans-serif;
color: #00f;
padding: 10px 0 10px 10px;
}
.textbox{
width: 400px;
padding: 2px;
font: normal 12px Arial, Helvetica, sans-serif;
color: #000;
}
.formbutton{
font: normal 12px Arial, Helvetica, sans-serif;
color: #000;
}
</style>
<script language="javascript" src="prototype-1.4.0.js"></script>
<script language="javascript">
// attach handler to window object
Event.observe(window,'load',initializeEmailClient,false);
// initialize email application
function initializeEmailClient(){
Event.observe
($('resetbutton'),'click',clearMessageField,false);
Event.observe('mailform','submit',sendEmail);
}
// reset 'message' field to send email
function clearMessageField(){
Field.clear($('message'));
}
// send http request
function sendEmail(e){
var params='to='+$F('to')+'&subject='+$F('subject')+'&cc='+$F
('cc')+'&bcc='+$F('bcc')+'&message='+escape($F('message'));
var xmlobj=new Ajax.Updater('state','send_email.php',{method:
'get',parameters: params});
// prevent form from submitting
Event.stop(e);
}
</script>
</head>
<body>
<h1>Prototype-based SMTP Client</h1>
<div id="maincontainer">
<div id="state">STATUS: COMPOSING MESSAGE...</div>
<form id="mailform">
<p>To: <input type="text" id="to" title="enter email address of
recipient" class="textbox" /></p>
<p>Subject: <input type="text" id="subject" title="enter the
subject of your message" class="textbox" /></p>
<p>Cc: <input type="text" id="cc" class="textbox" /></p>
<p>Bcc: <input type="text" id="bcc" class="textbox" /></p>
<p><textarea name="message" title="Type here the text of your
message" id="message"></textarea></p>
<p><input type="submit" value="Send Message" class="formbutton"
title="Send Message"/>
<input type="reset" value="Clear All Fields" class="formbutton"
title="Clear All Fields" />
<input type="button" value="Clear Message" class="formbutton"
title="Clear Message" id="resetbutton"/></p>
</form>
</div>
</body>
</html>
(signature of send_mail.php file)
<?php
// clean up GET data
array_map('trim',$_GET);
// check if 'to' field has been filled or not
if(!$_GET['to']){
echo 'STATUS: PLEASE SPECIFY AN EMAIL ADDRESS';
exit();
}
// check if 'subject' field has been filled or not
if(!$_GET['subject']){
echo 'STATUS: PLEASE SPECIFY A SUBJECT';
exit();
}
// check if 'message' field has been filled or not
if(!$_GET['message']){
echo 'STATUS: PLEASE ENTER YOUR MESSAGE';
exit();
}
// get message fields
$to=$_GET['to'];
$subject=$_GET['subject'];
$message=$_GET['message'];
// define MIME headers
$headers="MIME-Version 1.0rn"."Content-Type: text/plain;
charset=iso-8859-1rn"."From: myaddress@mydomain.comrn"."Reply-to:
myaddress@mydomain.comrn";
// check if 'Cc' field has been filled or not
if(!empty($_GET['cc'])){
$headers.="Cc: ".$_GET['cc']."rn";
}
// check if 'Bcc' field has been filled or not
if(!empty($_GET['bcc'])){
$headers.="Bcc: ".$_GET['bcc']."rn";
}
// send email
if(!@mail($to,$subject,$message,$headers)){
echo 'STATUS: ERROR SENDING MESSAGE';
exit();
}
else{
echo 'STATUS: MESSAGE WAS SENT SUCCESSFULLY';
exit();
}
?>
As you'll realize, only two files are required to get this SMTP client up and running, asides from the Prototype source files, of course. However, given the decent functionality provided by the application, it's really worthwhile to give it a try.
Final thoughts
During this three-part series, I provided you with a step-by-step guide on how to build an expansible SMTP client, which uses the robust functionality provided by the Prototype JavaScript library to send email messages to different recipients.
Hopefully, after reading this group of articles, you'll have a better idea of how to take advantage of the numerous AJAX capacities that come bundled with this useful software package.
See you in the next web development tutorial!
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